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## Central angle

en.wikipedia.org/wiki/Central_angle

A central angle is an angle whose apex (vertex) is the center O of a circle and whose legs (sides) are radii intersecting the circle in two distinct points A and B.

## Central angle of a circle - Math Open Reference

www.mathopenref.com/circlecentral.html

Given two points A and B, lines from them to center of the circle form the central angle ∠AOB. The central angle is the smaller of the two at the center. It does not  ...

## Arc Length and Radian Measure - Regents Exam Prep Center

www.regentsprep.org/regents/math/algtrig/atm1/arclengthlesson.htm

The radian measure of a central angle of a circle is defined as the ratio of the length of the arc the angle subtends, s, divided by the radius of the circle, r.

## Radian Measure - The Monterey Institute for Technology and ...

www.montereyinstitute.org/courses/DevelopmentalMath/TEXTGROUP-1-19_RESOURCE/U19_L2_T1_text_container.html

In order for us to be able to define radians, it is necessary to introduce the concept of a central angle. A central angle is an angle whose vertex is at the center of ...

## What is a Central Angle? - Definition, Theorem & Formula | Study.com

In this lesson, you will learn about the definition and properties of a central angle. You will also discover what the Central Angle Theorem is and...

## What is a Sector and Central Angle? | Virtual Nerd

www.virtualnerd.com/pre-algebra/perimeter-area-volume/circles/define-circles/sector-central-angle-definitions

Note: Just about everything in math has a name! Did you know that a fraction of the area of a circle is known as a sector? This tutorial introduces you to the term ...

## Central Angles, Arc Length, and Sector Area - Nelson Education

www.nelson.com/school/elementary/mathK8/quebec/0176237879/documents/NM8SB_5A.pdf

Central Angles, Arc Length, and Sector Area. An angle whose vertex is the centre of a circle and whose sides pass through a pair of points on the circle is called ...

## Central angle | Define Central angle at Dictionary.com

www.dictionary.com/browse/central-angle

Central angle definition, an angle formed at the center of a circle by two radii. See more.

Feb 10, 2013 ... Here are some examples of how to find the length of an arc, the measurement of a central angle, and the area of a sector of a circle.
Oct 29, 2008 ... http://www.mathproblemgenerator.com - How to find a central angle when given its corresponding arc degree. For more practice and to create ...

### Subtended angle from arc length | Arc length (degrees) | Khan ...

Watch Sal solve an example where he finds the central angle given arc length.

### Central Angle -- from Wolfram MathWorld

mathworld.wolfram.com

A central angle in a circle determines an arc arcAC . CentralInscribedAngle. For an inscribed angle ∠ABC and central angle ∠AOC with the same endpoints, ...

### Central Angle of a Circle. Illustrated explanation with interactive ...

www.mathwarehouse.com

The central angle of a circle is the angle based at the circle's center. In other words, the vertex of the angle must be at the center of the circle. A central angle is  ...